Home / 15,541.44-21,449.52-9,880.80

Finding the Fourth Proportional to 15,541.44, 21,449.52 and 9,880.80

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Solution

The fourth proportional to 15,541.44, 21,449.52 and 9,880.80 is: 13,636.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,541.44 : 21,449.52 = 9,880.80 : x
  2. Step 2: Convert to fraction form
    15,541.44/21,449.52 = 9,880.80/x
  3. Step 3: Cross multiply
    15,541.44x = 21,449.52 × 9,880.80
  4. Step 4: Simplify right side
    15,541.44x = 211,938,417.22
  5. Step 5: Solve for x
    x = 211,938,417.22/15,541.44
  6. Step 6: Final answer
    x = 13,636.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.